差分

このページの2つのバージョン間の差分を表示します。

--- hardware:gl-ar750s-ext:managing_firewall [2020/02/26 03:18] – 作成ともやん
+++ hardware:gl-ar750s-ext:managing_firewall [2020/03/13 08:19] (現在) – ともやん
@@ 行 1: / 行 1: @@
+<html>
+  <style>
+    #result pre {
+      height: 300px;
+      overflow: scroll;
+      overflow-x: hidden;
+      font-size: 10px;
+    }
+  </style>
+</html>
 ====== ファイアウォール管理 ======
+===== ホームネットワークトラフィック監視 =====
+==== インストール ====
+<WRAP prewrap 100%>
+<code>
+# opkg update && opkg install ulogd ulogd-mod-nfacct ulogd-mod-nfct ulogd-mod-nflog ulogd-mod-xml ulogd-mod-syslog ulogd-mod-extra syslog-ng
+</code>
+</WRAP>
+<WRAP prewrap 100% #result>
+<code>
+Downloading https://fw.gl-inet.com/releases/kmod-3.2/ar71xx/nand/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_core
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/sync_kmod-3.2/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_sync
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/base/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_base
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/gli_pub/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_gli_pub
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_packages
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/luci/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_luci
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/routing/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_routing
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/telephony/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_telephony
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/glinet/Packages.gz
+Updated list of available packages in /var/opkg-lists/glinet_glinet
+Installing ulogd (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd_2.0.5-2_mips_24kc.ipk
+Installing ulogd-mod-nfacct (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd-mod-nfacct_2.0.5-2_mips_24kc.ipk
+Installing ulogd-mod-nfct (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd-mod-nfct_2.0.5-2_mips_24kc.ipk
+Installing ulogd-mod-nflog (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd-mod-nflog_2.0.5-2_mips_24kc.ipk
+Installing ulogd-mod-xml (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd-mod-xml_2.0.5-2_mips_24kc.ipk
+Installing ulogd-mod-syslog (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd-mod-syslog_2.0.5-2_mips_24kc.ipk
+Installing ulogd-mod-extra (2.0.5-2) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/ulogd-mod-extra_2.0.5-2_mips_24kc.ipk
+Installing syslog-ng (3.9.1-3) to root...
+Downloading https://fw.gl-inet.com/releases/packages-3.x/ar71xx/packages/syslog-ng_3.9.1-3_mips_24kc.ipk
+Configuring syslog-ng.
+Configuring ulogd.
+Configuring ulogd-mod-extra.
+Configuring ulogd-mod-nfct.
+Configuring ulogd-mod-syslog.
+Configuring ulogd-mod-xml.
+Configuring ulogd-mod-nfacct.
+Configuring ulogd-mod-nflog.
+</code>
+</WRAP>
+==== syslog-ng の動作確認 ====
+<code>
+# cat /var/log/messages
+Feb 26 05:48:04 TomoyanWRT-GL syslog-ng[7403]: syslog-ng starting up; version='3.9.1'
+</code>
+==== ulog の設定 ====
+<code>
+# vi /etc/ulog.conf
+</code>
+<WRAP prewrap 100%>
+<code autoconf /etc/ulog.conf>
+# this is a stack for flow-based logging via LOGEMU
+#stack=ct1:NFCT,ip2str1:IP2STR,print1:PRINTFLOW,emu1:LOGEMU
+stack=ct1:NFCT,ip2str1:IP2STR,print1:PRINTFLOW,sys1:SYSLOG
+[ct1]
+hash_enable=0
+#netlink_socket_buffer_size=217088
+#netlink_socket_buffer_maxsize=1085440
+#netlink_resync_timeout=60 # seconds to wait to perform resynchronization
+#pollinterval=10 # use poll-based logging instead of event-driven
+# If pollinterval is not set, NFCT plugin will work in event mode
+# In this case, you can use the following filters on events:
+#accept_src_filter=192.168.1.0/24,1:2::/64 # source ip of connection must belong to these networks
+#accept_dst_filter=192.168.1.0/24 # destination ip of connection must belong to these networks
+#accept_proto_filter=tcp,sctp # layer 4 proto of connections
+</code>
+</WRAP>
+ulogd を手動で実行して動作確認を行う。\\
+<code>
+# ulogd -v
+Wed Feb 26 05:21:35 2020 <7> ulogd.c:622 load_plugin: '/usr/lib/ulogd/ulogd_filter_IP2BIN.so': Error relocating /usr/lib/ulogd/ulogd_filter_IP2BIN.so: uint32_to_ipv6: symbol not found
+Wed Feb 26 05:21:35 2020 <5> ulogd.c:843 building new pluginstance stack: 'ct1:NFCT,ip2str1:IP2STR,print1:PRINTFLOW,sys1:SYSLOG'
+Wed Feb 26 05:21:35 2020 <5> ulogd_inpflow_NFCT.c:1399 NFCT plugin working in event mode
+</code>
+**uint32_to_ipv6: symbol not found** はバグ？\\
+==== ulogd の有効化と起動 ====
+<code>
+# service ulogd enable
+# service ulogd start
+</code>
+==== 接続追跡フローアカウンティングを有効に設定 ====
+<code>
+# echo '1' > /proc/sys/net/netfilter/nf_conntrack_acct
+# echo 'net.netfilter.nf_conntrack_acct=1' > /etc/sysctl.d/100-custom.conf
+</code>
 ===== 参考文献 =====
 [[https://openwrt.org/docs/guide-user/firewall/netfilter_iptables/iptables_log_targets|OpenWrt Project: Logging Forwarded Packets in OpenWrt]]\\
+[[https://balagetech.com/monitor-network-traffic-openwrt-syslog-ng/|Monitor home network traffic with OpenWRT and Syslog-ng]]\\